TEA1750_2
?NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 02 15 December 2008
23 of 29
NXP Semiconductors
TEA1750
GreenChip III SMPS control IC
Peak current control yback (pin FBCTRL)
V
FBCTRL
voltage on pin FBCTRL
for maximum yback peak
current
1.85
2.0
2.15
V
V
to(FBCTRL)
time-out voltage on pin
FBCTRL
enable voltage
-
2.5
-
V
trip voltage
4.2
4.5
4.8
V
R
int(FBCTRL)
internal resistance on pin
FBCTRL
-
3
-
k&
I
O(FBCTRL)
output current on pin FBCTRL V
FBCTRL
= 0 V
1.4
1.17 0.93 mA
V
FBCTRL
= 2 V
0.6
0.5
0.4
mA
I
to(FBCTRL)
time-out current on pin
FBCTRL
V
FBCTRL
= 2.6 V
36
30
24
礎
V
FBCTRL
= 4.1 V
34.5 28.5 22.5 礎
Valley switching yback (pin HV)
(V/t)
vrec(fb)
yback valley recognition
voltage change with time
75
-
+75
V/祍
t
d(vrec-swon)
valley recognition to switch-on
delay time
[5]
-
150
-
ns
Soft start yback (pin FBSENSE)
I
start(soft)fb
yback soft start current
75
60
45
礎
V
start(soft)fb
yback soft start voltage
0.43
0.49
0.54
V
R
start(soft)fb
yback soft start resistance
12
-
-
k&
Overcurrent protection yback (pin FBSENSE)
V
sense(fb)max
maximum yback sense
voltage
V/t = 50 mV/祍
0.49
0.52
0.55
V
V/t = 200 mV/祍
0.52
0.55
0.58
V
t
leb(fb)
yback leading edge blanking
time
255
305
355
ns
Driver (pin FBDRIVER)
I
src(FBDRIVER)
source current on pin
FBDRIVER
V
FBDRIVER
= 2 V
-
0.5
-
A
I
sink(FBDRIVER)
sink current on pin FBDRIVER V
FBDRIVER
= 2 V
-
0.7
-
A
V
FBDRIVER
= 10 V
-
1.2
-
A
V
O(FBDRIVER)(max)
maximum output voltage on
pin FBDRIVER
-
11
12
V
Latch input (pin LATCH)
V
prot(LATCH)
protection voltage on pin
LATCH
1.23
1.25
1.27
V
I
O(LATCH)
output current on pin LATCH
V
prot(LATCH)
< V
LATCH
< V
oc(LATCH)
85
80
75
礎
V
en(LATCH)
enable voltage on pin LATCH at start-up
1.30
1.35
1.40
V
V
hys(LATCH)
hysteresis voltage on pin
LATCH
V
en(LATCH)
V
prot(LATCH)
80
100
140
mV
V
oc(LATCH)
open-circuit voltage on pin
LATCH
-
2.9
-
V
Table 5.
Characteristics &continued
T
amb
= 25 癈; V
CC
= 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when owing into
the IC; unless otherwise specied.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
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